package com.shop.cereshop.app.tencent.moderation.service.impl;
import java.time.LocalDateTime;

import com.shop.cereshop.app.dao.recommend.CereRecommendTrendsDAO;
import com.shop.cereshop.app.dao.tim.moderation.VideoModerationTaskMapper;
import com.shop.cereshop.app.tencent.moderation.domain.VideoModerationCallbackRequest;
import com.shop.cereshop.app.tencent.moderation.domain.VideoModerationCallbackResponse;
import com.shop.cereshop.app.tencent.moderation.service.VideoModerationCallbackService;
import com.shop.cereshop.commons.constant.CoReturnFormat;
import com.shop.cereshop.commons.enums.recommend.RecommendPublishEnum;
import com.shop.cereshop.commons.result.Result;
import com.shop.cereshop.commons.tencent.moderation.constant.ModerationConstant;
import com.shop.cereshop.commons.tencent.moderation.domain.entity.VideoModerationTask;
import com.shop.cereshop.commons.tencent.moderation.enums.VideoTaskTypeEnum;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;

/**
 * @description: 视频审核回调服务实现
 * @author zdd
 * @date 2025/10/28 20:46
 * @version 1.0
 */
@Slf4j
@Service
public class VideoModerationCallbackServiceImpl implements VideoModerationCallbackService {

    @Resource
    private VideoModerationTaskMapper videoModerationTaskMapper;
    @Resource
    private CereRecommendTrendsDAO cereRecommendTrendsDAO;

    @Override
    public VideoModerationCallbackResponse handleCallback(VideoModerationCallbackRequest request) {
        long startTime = System.currentTimeMillis();

        try {
            log.info("收到视频审核回调, TaskId: {}, Event: {}",
                    request.getData() != null ? request.getData().getTaskId() : "unknown",
                    request.getEvent());

            // 验证请求数据
            if (request.getData() == null) {
                log.error("回调数据为空");
                return VideoModerationCallbackResponse.fail("Data is null");
            }

            VideoModerationCallbackRequest.VideoModerationData data = request.getData();

            // 处理回调数据
            processCallbackData(data);

            log.info("视频审核回调处理完成, TaskId: {}, Status: {}, Suggestion: {}, Label: {}, 耗时: {}ms",
                    data.getTaskId(), data.getStatus(), data.getSuggestion(), data.getLabel(),
                    System.currentTimeMillis() - startTime);

            return VideoModerationCallbackResponse.success();

        } catch (Exception e) {
            log.error("处理视频审核回调异常", e);
            return VideoModerationCallbackResponse.fail("Processing failed: " + e.getMessage());
        }
    }

    /**
     * 处理回调数据
     */
    private void processCallbackData(VideoModerationCallbackRequest.VideoModerationData data) {
        String taskId = data.getTaskId();
        String status = data.getStatus();
        String suggestion = data.getSuggestion();
        String label = data.getLabel();
        Long score = data.getScore();

        // 查询任务记录
        VideoModerationTask moderationTask = videoModerationTaskMapper.selectByTaskId(taskId);

        // 更新任务记录信息
        updateTaskStatus(moderationTask, status, suggestion, label, score);

        // 审核任务类型
        Integer type = moderationTask.getType();

        // 更新 宠圈动态状态
        if (VideoTaskTypeEnum.POSTS_VIDEO.getCode().equals(type)) {
            updateTrendStatus(moderationTask.getStatus(), data.getDataId(), suggestion);
        }

//        // 根据审核结果进行业务处理
//        switch (suggestion) {
//            case ModerationConstant.SUGGESTION_BLOCK:
//                handleBlockedContent(taskId, label, score, data);
//                break;
//            case ModerationConstant.SUGGESTION_REVIEW:
//                handleReviewContent(taskId, label, score, data);
//                break;
//            case ModerationConstant.SUGGESTION_PASS:
//                handlePassedContent(taskId, data);
//                break;
//            default:
//                log.warn("未知的审核建议: {}, TaskId: {}", suggestion, taskId);
//                handleUnknownContent(taskId, data);
//        }
//
//        // 更新数据库中的任务状态
//        updateTaskStatus(taskId, status, suggestion, label, score);
//
//        // 记录详细的审核结果
//        recordModerationDetails(data);
    }

    /**
     * 更新任务记录的状态
     */
    private void updateTaskStatus(VideoModerationTask task, String status, String suggestion, String label, Long score) {
        task.setStatus(status);
        task.setSuggestion(suggestion);
        task.setLabel(label);
        task.setScore(score);
        videoModerationTaskMapper.updateById(task);
    }

    /**
     * 更新 宠圈动态状态
     */
    private void updateTrendStatus(String taskStatus, String dataId, String suggestion){
        // 原本创建任务成功后，设置的状态为三方审核不通过、待人工审核，所以现在只需要处理审核通过的情况
        if (ModerationConstant.TASK_STATUS_FINISH.equals(taskStatus) && ModerationConstant.SUGGESTION_PASS.equals(suggestion)) {
            cereRecommendTrendsDAO.updateTrendStatus(Long.valueOf(dataId),
                    RecommendPublishEnum.AUDIT_SUCCESS.getCode(),
                    RecommendPublishEnum.AUDIT_SUCCESS.getMsg());
        }
        log.info("更新 宠圈动态状态完成, DataId: {}, Status: {}", dataId, RecommendPublishEnum.AUDIT_SUCCESS.getMsg());
    }

    /**
     * 处理违规内容
     */
    private void handleBlockedContent(String taskId, String label, Integer score,
                                      VideoModerationCallbackRequest.VideoModerationData data) {
        log.warn("视频审核违规拦截, TaskId: {}, Label: {}, Score: {}", taskId, label, score);

        // 业务逻辑：下架视频、通知用户、记录违规等
        // 例如：
        // 1. 更新视频状态为违规
        // 2. 发送违规通知
        // 3. 记录审核日志
        // 4. 执行封禁等操作

        // 示例：记录违规详情
        if (data.getFrameSegments() != null) {
            for (VideoModerationCallbackRequest.FrameSegment segment : data.getFrameSegments()) {
                log.info("违规截图片段 - 时间偏移: {}s, 标签: {}, 分数: {}",
                        segment.getOffsetTime(), segment.getLabel(), segment.getScore());
            }
        }
    }

    /**
     * 处理需要人工复核的内容
     */
    private void handleReviewContent(String taskId, String label, Long score,
                                     VideoModerationCallbackRequest.VideoModerationData data) {
        log.info("视频审核需要人工复核, TaskId: {}, Label: {}, Score: {}", taskId, label, score);

        // 业务逻辑：将视频加入人工审核队列、通知审核人员等
        // 例如：
        // 1. 更新视频状态为待人工审核
        // 2. 发送审核通知给运营人员
        // 3. 记录待审核日志
    }

    /**
     * 处理通过的内容
     */
    private void handlePassedContent(String taskId, VideoModerationCallbackRequest.VideoModerationData data) {
        log.info("视频审核通过, TaskId: {}", taskId);

        // 业务逻辑：视频正常上架、更新状态等
        // 例如：
        // 1. 更新视频状态为已审核通过
        // 2. 视频正常展示给用户
        // 3. 记录审核通过日志
    }

    /**
     * 处理未知建议的内容
     */
    private void handleUnknownContent(String taskId, VideoModerationCallbackRequest.VideoModerationData data) {
        log.warn("视频审核未知建议, TaskId: {}, Suggestion: {}", taskId, data.getSuggestion());

        // 保守处理：默认需要人工复核
        handleReviewContent(taskId, data.getLabel(), data.getScore(), data);
    }

    /**
     * 更新任务状态（需要根据您的业务数据库实现）
     */
    private void updateTaskStatus(String taskId, String status, String suggestion, String label, Integer score) {
        // 这里需要根据您的业务实现更新数据库
        // 示例：
        try {
            // videoTaskService.updateTaskStatus(taskId, status, suggestion, label, score);
            log.info("更新任务状态完成, TaskId: {}, Status: {}, Suggestion: {}", taskId, status, suggestion);
        } catch (Exception e) {
            log.error("更新任务状态失败, TaskId: {}", taskId, e);
        }
    }

    /**
     * 记录审核详情（需要根据您的业务数据库实现）
     */
    private void recordModerationDetails(VideoModerationCallbackRequest.VideoModerationData data) {
        // 这里需要根据您的业务实现记录详细审核结果
        // 可以记录到数据库或日志文件中

        log.debug("记录审核详情, TaskId: {}, 截图数量: {}, 音频片段: {}, 文本片段: {}",
                data.getTaskId(),
                data.getFrameSegments() != null ? data.getFrameSegments().size() : 0,
                data.getAudioSegments() != null ? data.getAudioSegments().size() : 0,
                data.getTextSegments() != null ? data.getTextSegments().size() : 0);
    }

    @Override
    public boolean verifySignature(String signature, String timestamp, String nonce, String body) {
        // 可选：实现签名验证，确保回调请求来自腾讯云
        // 参考：https://cloud.tencent.com/document/product/1265/104001

        // 如果不需要严格的签名验证，可以直接返回true
        log.debug("跳过签名验证");
        return true;

        /*
        // 如果需要严格的签名验证，可以这样实现：
        try {
            // 1. 将timestamp、nonce、body按字典序排序
            // 2. 将排序后的三个参数拼接成一个字符串
            // 3. 将拼接后的字符串进行sha1加密
            // 4. 将sha1加密后的字符串与signature进行比较
            // 5. 返回比较结果

            String[] arr = new String[]{timestamp, nonce, body};
            Arrays.sort(arr);

            StringBuilder content = new StringBuilder();
            for (String s : arr) {
                content.append(s);
            }

            String calculatedSignature = sha1(content.toString());
            return calculatedSignature.equals(signature);

        } catch (Exception e) {
            log.error("签名验证失败", e);
            return false;
        }
        */
    }

}
